BEHAVIOR OF EXCAVATION BOTTOM WITH GROUND IMPROVEMENT AS HEAVING SUPPRESSIONS

Abstract

 In the design of temporary retaining wall, the stability of the excavation bottom against heaving is important factor in addition to the displacement and stress of the wall. The full-face ground improvement to increase the friction between the wall and the bottom is one of the common having suppressions. However, to clarify the behavior of excavation bottom is expected to lead to more economic heaving suppressions. In this paper, we worked on the model experiment and simulation analysis by soil-water coupled finite element method for the ground improved bottom. As a result, we clarified the characteristic behavior of the full-face or the grid-shape improved bottom focusing the displacement and stress of the bottom.